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Copper-based alloy powder for inner hole laser cladding

A copper-based alloy and laser cladding technology, applied in the field of alloy powder, can solve the problems of low inner hole processing efficiency, easy damage to boring tools, low quality, etc., and achieve the effects of easy processing, reduced damage rate, and good self-lubrication.

Active Publication Date: 2021-07-30
SHANDONG ENERGY HEAVY EQUIP GRP DAZU REMANUFACTURING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inner hole laser cladding technology is a widely used method for additive manufacturing, surface strengthening and repair of the inner surface of parts. Honing processing, the parts after boring and honing processing are the finished parts, but the hardness of the laser cladding alloy powder currently used is relatively high. When boring the inner hole after laser cladding, due to the The hardness is low and the processing position is located in the part hole, which is not easy to process, and the boring tool is easy to be damaged, and the processing efficiency of the inner hole is low due to the high hardness of the laser cladding alloy powder, and the quality is not high

Method used

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  • Copper-based alloy powder for inner hole laser cladding
  • Copper-based alloy powder for inner hole laser cladding
  • Copper-based alloy powder for inner hole laser cladding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The laser cladding inner hole copper-based alloy powder provided in this specific example is composed of main components and trace components, the main components are composed of copper and aluminum, and the trace components are composed of carbon, chromium, molybdenum, silicon and iron composition. Wherein, the mass percentage of the main component in the copper-based alloy powder is 99.4-99.8%, and the mass ratio of copper and aluminum in the main component is 10.7-10.8:1.

[0026] Further, iron is the main trace component in the trace components, and the mass percentage of iron in the trace components is 54-55%.

[0027] Specifically, the mass percentages of each component in the copper-based alloy powder are: carbon 0.005-0.01%, chromium 0.05-0.09%, molybdenum 0.01-0.08%, silicon 0.03-0.09%, iron 0.20-0.30%, aluminum 6 -10%, the balance being copper.

Embodiment 2

[0029] A copper-based alloy powder for laser cladding inner holes is provided in this specific example. In this embodiment, the components of the copper-based alloy powder for laser cladding inner holes are the same as those in Example 1, More specifically, the mass percentages of the components in the copper-based alloy powder for laser cladding inner holes in this specific embodiment are: 0.01% carbon, 0.09% chromium, 0.04% molybdenum, and 0.06% silicon , 0.24% iron, 8.5% aluminum, and the balance is copper. The particle size of the laser cladding inner hole copper-based alloy powder is 300-500 mesh (0.025-0.048mm), the oxygen content in the laser cladding inner hole copper-based alloy powder is 0.0108ppm, and the oxygen content in the alloy powder is controlled and improved The quality of the alloy powder is improved.

[0030] After laser cladding of the workpiece, for the boring process of the outer circle, it can be processed well when the hardness of the outer circle is...

Embodiment 3

[0039] This specific example provides a preparation method of laser cladding inner hole copper-based alloy powder in Example 2, which specifically includes the following steps:

[0040] (1) Weigh the ingredients of the formula and mix them to obtain a mixture A, put the mixture A into a melting crucible, then heat it to 1500° C. for melting under the protection of argon, and keep it warm for 20 minutes to obtain a melt of the mixture A;

[0041] (2) Pour the melt of mixture A into an insulated crucible, and carry out gas atomization through a restricted supersonic nozzle and a draft tube to obtain mixture B, the gas medium of the gas atomization is argon, and the gas atomization of the gas atomization The pressure is 5Mpa;

[0042] (3) Collect and dry the mixture B, and perform powder mixing treatment to ensure the surface smoothness of the mixture B particles, and after sieving, an alloy powder with a particle size of ≤50 μm can be obtained.

[0043] In the above steps, the ...

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Abstract

The invention discloses copper-based alloy powder for inner hole laser cladding. The copper-based alloy powder is composed of a major component and a minor component, wherein the major component is composed of copper and aluminum, and the minor component is composed of carbon, chromium, molybdenum, silicon and iron. Namely, the copper-based alloy powder comprises, by mass, 0.005%-0.01% of carbon, 0.05%-0.09% of chromium, 0.01%-0.08% of molybdenum, 0.03%-0.09% of silicon, 0.20%-0.30% of iron, 6%-10% of aluminum, and the balance copper. The copper-based alloy powder for inner hole laser cladding is good in self-lubricating property, low in hardness and easy to machine, is applied to laser cladding of inner holes of parts, facilitates boring of the inner holes after laser cladding, and improves the boring efficiency and quality of the inner holes after laser cladding.

Description

technical field [0001] The invention belongs to the technical field of alloy powders, in particular to a copper-based alloy powder for laser cladding inner holes. Background technique [0002] Laser cladding refers to placing the selected coating material on the surface of the cladding substrate in different ways of adding materials, melting it and the thin layer of the substrate surface at the same time through laser irradiation, and forming a very low dilution after rapid solidification. The surface coating that is metallurgically combined with the substrate is a process method that significantly improves the wear resistance, corrosion resistance, heat resistance, oxidation resistance and electrical properties of the base surface, so as to achieve the purpose of surface modification or repair, which not only satisfies the specific needs of the material surface Performance requirements, but also save a lot of precious elements. Inner hole laser cladding technology is a wid...

Claims

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Application Information

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IPC IPC(8): C22C9/01B22F9/08C23C24/10
CPCB22F9/082C22C9/01C23C24/106
Inventor 澹台凡亮杨帆田洪芳郎坤刘虎史超王炳琪王嘉琦王伟侯庆玲李伟明
Owner SHANDONG ENERGY HEAVY EQUIP GRP DAZU REMANUFACTURING CO LTD
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